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xamarin/xamarin-android

Development discussion of Xamarin.Android: https://github.com/xamarin/xamarin-android

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Tomasz Cielecki

@Cheesebaron

Seems similar

Will try your workaround

Thanks!

Tomasz Cielecki

@Cheesebaron

I've triggered a new build with the downgrade, hopefully this works 🤞

Tomasz Cielecki

@Cheesebaron

@jonathanpeppers thank you so much. It worked!

Jonathan Peppers

@jonathanpeppers

:thumbsup: we should hopefully have a fix soon as everyone gets back from the holidays

Jonathan Dick

@Redth

yeah we have a PR for XBD already, just needs to be reviewed/merged/published xamarin/XamarinComponents#774

IoTFier

@IoTFier

Hi @Redth - is the Xamarin component - https://github.com/xamarin/XamarinComponents/tree/master/Util/Xamarin.Build.Download - designed only for native or can it be also used in the Xamarin Forms solution a/c all platform projects including UWP ?

Jonathan Dick

@Redth

i'm not entirely sure what you mean? what's the use case?

IoTFier

@IoTFier

I meant can this component be referred in android, ios and UWP projects withing XF solution ? I'm trying to get familiar with the capability provided by this component.

Daniel Cazzulino

@kzu

heya folks, so how does someone trust a dev SSL cert for a XF app? see https://developercommunity.visualstudio.com/content/problem/874990/unable-to-debug-xamarin-forms-and-aspnet-core-web.html

seems like our templates should do that by default so things "just work" when developing locally (maybe inside an #if DEBUG?)

Jon Douglas

@JonDouglas

we can definitely add the cleartext addition in our templates. Let me add an issue there.

Daniel Cazzulino

@kzu

there is already one

http://work.azdo.io/1048069

Jon Douglas

@JonDouglas

i added a github issue and will refer these items over

Jonathan Peppers

@jonathanpeppers

@kzu make sure you just enable SSL - don't do anything to turn if off in the app

we shouldn't be pushing anyone to use http

Daniel Cazzulino

@kzu

nono, the problem isn't that. It's that the dev cert from asp.net isn't trusted

it is SSL

Jonathan Peppers

@jonathanpeppers

there still might need to be a clear comment that says "don't do this in production"

it depends on what the change is though, if it somehow only allows the service running on localhost

the emulator won't know it's localhost, though

Brendan Zagaeski

@brendanzagaeski

Huh. Maybe there are desktop .NET client templates for ASP.NET that show the preferred approach to solve that?

Jonathan Pobst

@jpobst

traditionally they have made it super hard to run asp.net for !localhost

maybe they have finally had to relent for Docker

Alexander Köplinger

@akoeplinger

afaik the dotnet sdk generates a localhost certificate and registers that in the system cert store

I guess you need to somehow propagate that to android

Jonathan Pobst

@jpobst

so there's 2 issues: only allowing traffic to localhost, and only allowing SSL traffic

Brendan Zagaeski

@brendanzagaeski

Oh, that makes sense. Interesting.

IoTFier

@IoTFier

while deploying XF app to a 32 bit pixel3a emulator, I am getting an error System.ArgumentException: Illegal characters in path. Any thoughts to resolve this ?

Severity Code Description Project File Line Suppression State
Error XARDF7004: System.ArgumentException: Illegal characters in path.
at System.Security.Permissions.FileIOPermission.EmulateFileIOPermissionChecks(String fullPath)
at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, String fullPath, Boolean checkForDuplicates, Boolean needFullPath)
at System.IO.Directory.Delete(String fullPath, String userPath, Boolean recursive, Boolean checkHost)
at Xamarin.Android.Tasks.RemoveDirFixed.RunTask()
at Xamarin.Android.Tasks.AndroidTask.Execute() 0

it is happening only for this app (https://github.com/jsuarezruiz/xamarin-forms-page-transitions)

IoTFier

@IoTFier

Hi @JonDouglas , @jonpryor , @Redth - any thoughts on my request above ? I am using VS 16.4.2 ; not having any issue with deployment of the app on iOS simulator.

Jonathan Peppers

@jonathanpeppers

@IoTFier the error message you're getting there will be improved by: xamarin/xamarin-android@c0c3cb1
But it seems like the build can't delete a directory
Can you delete that file manually in File Explorer?

Frank Szendzielarz

@FrankSzendzielarz

Hi folks. We're looking to move a discussion from StackOverflow somewhere where we might get help. Basically for Android since upgrading Xamarin.Forms components we're no longer getting push notifications handled when the app is stopped (not force stopped, not in Doze mode). Worked for earlier 3.? versions, not anymore. The SO conversation is in the comments section here https://stackoverflow.com/questions/59582314/how-can-i-receive-a-push-notification-when-my-xamarin-android-app-is-stopped

Have folks here in the last 3 or 4 months run into any known Firebase/Xamarin issues that might help? Is this a forms thing or OK to discuss here?

Jonathan Peppers

@jonathanpeppers

@FrankSzendzielarz when you updated Xamarin.Forms did other NuGet packages update?
Like the support libraries, google play services, etc.

Looking at the code on the stack overflow post, I would add logging throughout
You need to know exactly which point things fail, by looking at adb logcat output

Matthew

@MattVon

Hey @jonathanpeppers , I can't speak for Frank for his project but the source code shown in the StackOverflow posts is part of 2 projects. In my case, my work project and my sample project. Source code, NuGet packages (relevant to push) and any dependencies match across both the work project and the sample project, yet only the sample project works. That said, as in Franks experience my work project also had an update of XF from 3.6 to 4.x - that's the only thing that has sprung to my mind at the moment. I've used AppCenter logging but nothing happens, for my end I'll check adb logcat - I don't quite know how it works yet but hopefully Frank can add more input from his experience.

Jonathan Peppers

@jonathanpeppers

The logging is so you can know how far it gets before it fails
Since you are testing a notification when the app is closed you can't just use the IDE's debugger, adb logcat is a good option there

When I implemented push in apps in the past, I had logging all over it, even in the production App Store build

Push notifications just seem to break in weird ways

Frank Szendzielarz

@FrankSzendzielarz

I have the logs using Visual Studios device logs viewer, same as logcat, getting that 'Could not activate JNI Handle 0x7fdbfee170 (key_handle 0x7d963d4) of Java type 'crc64925d64ef8a16450b/FirebaseService' as managed type 'CMSApp.Droid.FirebaseService'. type of error. Suspect ctor of [My]FirebaseService accessing App component or ctor related problem now- perhaps upgrade in XamarinForms (and corresponding play services etc) results in modified lifecycle. Just testing now.

Frank Szendzielarz

@FrankSzendzielarz

OK sussed it. It's definitely the ctor. Got the notifications working. Am going to post this in the GitHub issue tracker.